Diffuse Gamma Rays: Galactic and Extragalactic Diffuse Emission
arXiv:astro-ph/0402243 · doi:10.1007/978-1-4020-2256-2_12
Abstract
"Diffuse" gamma rays consist of several components: truly diffuse emission from the interstellar medium, the extragalactic background, whose origin is not firmly established yet, and the contribution from unresolved and faint Galactic point sources. One approach to unravel these components is to study the diffuse emission from the interstellar medium, which traces the interactions of high energy particles with interstellar gas and radiation fields. Because of its origin such emission is potentially able to reveal much about the sources and propagation of cosmic rays. The extragalactic background, if reliably determined, can be used in cosmological and blazar studies. Studying the derived "average" spectrum of faint Galactic sources may be able to give a clue to the nature of the emitting objects.
32 pages, 28 figures, kapproc.cls. Chapter to the book "Cosmic Gamma-Ray Sources," to be published by Kluwer ASSL Series, Edited by K. S. Cheng and G. E. Romero. More details can be found at http://www.gamma.mpe-garching.mpg.de/~aws/aws.html
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- Constraints on cosmic-ray propagation models from a global Bayesian analysis
- GALPROP WebRun: an internet-based service for calculating galactic cosmic ray propagation and associated photon emissions
- Inverse Compton Origin of the Hard X-Ray and Soft Gamma-Ray Emission from the Galactic Ridge
- Dark Matter Searches with Astroparticle Data
- Observations of the Large Magellanic Cloud with Fermi
- Cosmic rays and climate change over the past 1000 million years
- Propagation of cosmic rays: nuclear physics in cosmic-ray studies
- Galactic Electron-Positron Annihilation Emission from X-Ray Binaries with Transient and Persistent Jets